Air-pump.



PATENTED NOV. 19, 1907.

' G. DB LAVAL.

AIR PUMP.

APPLIGATION FILED my 28.1906.

2 SHEETS-SHEET 1- q m/h wooea 34400441301 PATENTED NOV. 19, 1907.

v No. 871,349.

- G DE'LAVAL. AIR PUMP.

APPLICATION rum) MAY28,1906.

2 SHEETS-SHEBT 2.

awva mm UNITED STATES PATENT OFFICE.

GEORGE DE LAVAL, EAST ORANGE, NEW JERSEY, ASSIGNOR TO Tl IE BLAKE & KNOWLES STEAM PUMP WORKS, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

- AIR-PUMP.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed May 28. 1906. Serial No. 319.131.

To all whom it may concern:

Be it known that I, GEORGE DE LAVAL, a

citizen of the United States, residing at East Orange, county of Essex, and State of New I Jersey, have invented certain new and useprovide a simple and compact direct acting lair pump which shall be of high efliciency and large capacity while occupying the minimum floor space.

I secure the desired results by combining two double acting air pumps of the class known as valveless suction pumps, with a common delivery'chamber and a common suction, in suc'h a manner as to produce a very compact structure, while by the two double acting air cylinders with their pistons moving in opposite directions a very h gh eil'iclency anr arge capacity is secured For a full understanding of the invention,

a detailed desdiiption of a construction emside elevation of the same.

pump bodying the same in its preferred form will now be given in connection with the accompanying drawings forming a part of this specification, and the features forn'ling the invention then specifically pointed out the claims.

In the drawingsl igure 1 is a front elevatio'n of my improved airpump. Fig. 2 is a Fig. 3 is a horizontal section on the line 3 of Fig. 1. Fi 4 is a horizontal section on the line 4 of Figs. 1 and 5. Fig. 5-is a vertical section on the line 50f Fig. 2. Fig. 6 is a vertical section on the line'6 ofFig: 5. Fig. 7 is a horizontal section on the line 7 "of Figs. 5 and. 6.

- Referring to said drawings, A, A are the cylinders, having the pistons B, B whic areconnected b piston rods 1,1) to the steam pistons in the sleam c linders C, C, the two rods b, I) being connected between the steam and pump ends by beam 1) through links 10, from which beam a steam valve mechanism of any suitable character is'operaled through the tappet rod 1]. 'lhc entablature' E carrying 'the steam. cylinders is supported by columns 12 from the pump end, and the beam D is supported in bracket 13 connected to the entablature and pump end. The frame 14 livery valves 3.

extending between the steam and pump ends inclosing the space between the cylinders,

central valveless inlet or suction passages 15 surrounding the central portion of each 0 linder and uniting to form a single suction chamber between the cylinders, inclosed by wall aand suction chamber wall of, with the central suction connection 16 on the rear side of the pump. The space between the c linders A, A and the walls a, a, except t e part occupied by the suction chamber forms a delivery chamber 17 having the central delivery connection 18 on the front side of the pump, this'delivery chamber extending throughout the full hei ht of the pump end. The suction chamber is arranged atone side of the space between the cylinders so that it does not divide the up er and lower parts of the delivery cham er from each other.

The cylinders A, A deliver to the delivery chamber 17 at the lower ends of the cylinders through sets of delivery valves 1 divided for the two cylinders by partition 2, and from the upper ends of the cylinders through de- The valve plates 4 carrying the valves 3 and the cylinder heads 5 are removable for convenient access to the valves and pistons.

It will be understood that the pump end may be used with other steam ends and framing, or be driven otherwise .than by a beam steam engine, but the best results are secured by the beam connection between the piston rods of the two valveless suction pumps and their operation by one or more direct acting steam cylinders, forming a directacting beam pump, and such a construction forms a specific feature of the ii'ivention, although the broader claims are not limited thereto.

While the pump end is preferably made in a single casting, and one of the advantages of the specific arrangement of the pump and chambers and passages is that it permits this, such single casting construction is not essential to the invention.

What I claim is 1. A pump having two double acting. valvcless suction pump cylinders witla common delivery chamber formed by the space between the cylinders and fronearld rear inclosing walls.

2. A pump having two double acting valveless suction pump cylinders "with a ,common'delivery chamber formed by the space between the cylinders and front and rear inclosing walls, and a common suction chamber between the cylinders. v

A pump having two double acting valveless' suction pump-cylinders with a common delivery chamber formed by the I space between the cylinders and front and rear inclosing walls, a common suction cham- I ber between the cylinders, a central suction connection on one side of the pump, and a deliveryconnection on the oppo'slte side of the pump.

I v 4. Thecombination with 'two double 'acting valvelesssuction pumps having common delivery and suction chambers between the ing valveless suctlon pumps having common delivery and suction chambers between the cylinders formed by the space between the cylinders and front and rear inclosing walls, .i of a beam above the cylinders connecting the.

pump rods, an entablature above the beam,

and one or more direct acting steamcylinders mounted directly on the entablature.

A, suction valveless passages 15 extending about the cylinders and uniting in a single suction chamber between. the cylinders, common delivery chamber 17 between the cylinders extending longitudinally of the cyl- 6. A pump having the pump cylinders A,

inders-on both sides of the suction chamber and inclosed by the cylinder walls and front I and rear walls a, a, lower delivery valves 1 between the cylinders; and upper delivery valves 3 above the cylinders,-

In testimony whereof I have hereunto set my hand, in the presence of two subscribing witnesses.

GEORGE DE LAVAL.

I l/Vitnesse s: 7

All. BRAIDWOOD, B. M. L5ANnEus. 

